Hearing aid



1. Hearing aid

1.1 : Perspective

1.2 : Top

1.3 : Bottom

1.4 : Right

1.5 : Left

1.6 : Front

1.7 : Back

Fig. 1.1 is a top, front, left side perspective view thereof, fig. 1.2 is a top view thereof, fig. 1.3 is a bottom view thereof, fig. 1.4 is a right side view thereof, fig. 1.5 is a left side view thereof, fig. 1.6 is a front side view thereof, fig. 1.7 is a back side view thereof.

The broken lines shown in the figures depict portions of the hearing aid that form no part of the claimed design. 

CLAIM The ornamental design for a hearing aid, as shown and described. 